Urologybook.com is happy to announce the addition of a new chapter, percutaneous nephrolithotomy (PCNL) by authors Jed-Sian Cheng, MD/MPH, and Oleg Shapiro, MD from SUNY Upstate University Medical School, Syracuse, New York. PCNL procedures are used by urologist for removal of large kidney stones. We are grateful for Dr. Shapiro and his team’s second submission to urologybook.com.